Fakültemizin Jeofizik Mühendisliği Öğretim Üyelerinden Doç. Dr. Tuna Eken'in de yazar olarak yer aldığı ve Erzincan ve Karlıova arasındaki bölgenin altında devasa magma rezervuarları ‘le Kuzey Anadolu Fay Zonu arasındaki ilişkiyi ele alan makale Nature Communications & Earth & Environment adlı dergide yayınlanmıştır.
Makale adı: Fault-controlled magma pathways driving seismicity and eruption risk in Eastern Turkey
Yazarlar: Özgür Karaoğlu, Ivan Koulakov, Tuna Eken, Mohsen Bazargan, Taras Gerya, Luca Dal Zilio & Agust Gudmundsson
Özet:
Many oceanic and some continental transform faults host coupled tectonic shear and magmatism, complicating seismic and volcanic hazards. Here we integrate high-resolution seismic tomography and three-dimensional finite-element modelling to investigate fault–magma interactions along the eastern North Anatolian Fault Zone. Tomography reveals two shallow magma reservoirs beneath the Erzincan Basin and the Karlıova Triple Junction, characterised by high Vp/Vs (>1.85). The western reservoir is largely aseismic while the eastern reservoir has persistent seismicity. Time-dependent models demonstrate that right-lateral shear focuses tensile stresses around both reservoirs that encourage reservoir rupture and dyke injection. This stress concentration occurs even when the initial magma-generated excess pressure is zero, and may gradually expand towards the surface. Upward stress transfer is enhanced within the fractured damage zone, facilitating dyke propagation. The results may apply to many transform faults and are of great importance for evaluating the coupled earthquake–volcano hazards in such fault zones.
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Figure: Vp/Vs ratio distribution derived from seismic tomography. (a,b) Two horizontal and (c,d,e,f) four vertical cross-sections show high Vp/Vs anomalies with the western and eastern crustal reservoirs highlighted at depths of ~5–15 km. Pink lines denote mapped fault zones; red triangles mark Pliocene– Quaternary volcanic centres in the Erzincan Basin (ERZ). Black dots indicate seismic events within 7 km of the vertical profiles. Vertical pink bars correspond to surface-traced faults. NAFZ, North Anatolian Fault Zone (Karaoglu et al., 2026).
Karaoğlu, Ö., Koulakov, I., Eken, T. et al. Fault-controlled magma pathways driving seismicity and eruption risk in Eastern Turkey. Commun Earth Environ (2026). https://doi.org/10.1038/s43247-026-03286-5